Abstract: In an input pen having a pen-shaped casing, a ferrite core with a coil wound thereon and a ferrite chip are placed opposed to each other via an O-ring. The ferrite chip has a projection. When the input pen is operated, the projection and the ferrite core are moved closer together. When the ferrite chip is moved closer to the ferrite core during operation, the projection is placed substantially close to the ferrite core. Therefore, high responsivity is ensured without moving the ferrite chip into the coil, and there is no need to form an opening or a cavity in the ferrite core.

Abstract: The present invention relates to a six degrees of freedom information indicator, used in combination with a position detector using electromagnetic induction, corresponding to displacement and rotation of an object on a 3D space displayed on a computer display. A first operational input means enters two degrees of freedom information using an operating member positioned on an upper surface of an enclosure; a second operational input means enters one degree of freedom information by operation of a sliding switch positioned on a side surface of the enclosure; a third operational input means enters absolute rotation angle information around the Z-axis by operation of a rotary operating member positioned on a side surface of the enclosure; and a bottom surface input means including a coordinate detecting coil enters X and Y coordinate values by operation of the indicator within a plane parallel to the position detector surface.

Abstract: In an input pen having a pen-shaped casing, a ferrite core with a coil wound thereon and a ferrite chip are placed opposed to each other via an O-ring. The ferrite chip has a projection. When the input pen is operated, the projection and the ferrite core are moved closer together. When the ferrite chip is moved closer to the ferrite core during operation, the projection is placed substantially close to the ferrite core. Therefore, high responsivity is ensured without moving the ferrite chip into the coil, and there is no need to form an opening or a cavity in the ferrite core.